.spinner-box {
  position: fixed;
  top: 0;
  bottom: 0;
  left: 0;
  right: 0;
  padding-top: 5.5rem;
  background: #fff;
  width: 100%;
  max-width: 750px;
}

.spinner {
  font-size: 20px;
  width: 0.8rem;
  height: 0.8rem;
  margin: auto;
  border-radius: 50%;
  box-shadow: inset 0 0 0 .08rem rgba(78, 174, 49, 0.2);
}

.spinner .spinner-inner {
  position: absolute;
  clip: rect(0, 0.8rem, 0.8rem, .4rem);
  width: 0.8rem;
  height: 0.8rem;
  animation: spinner-circle-clipper 1s ease-in-out infinite;
}

@keyframes spinner-circle-clipper {
  0% {
    transform: rotate(0deg);
  }

  100% {
    transform: rotate(180deg);
  }
}

.spinner .spinner-inner:after {
  position: absolute;
  clip: rect(0, 0.8rem, 0.8rem, .4rem);
  width: 0.8rem;
  height: 0.8rem;
  content: '';
  animation: spinner-circle 1s ease-in-out infinite;
  border-radius: 50%;
  box-shadow: inset 0 0 0 .08rem rgba(78, 174, 49);
}

@keyframes spinner-circle {
  0% {
    transform: rotate(-180deg);
  }

  100% {
    transform: rotate(180deg);
  }
}

.spinner-txt {
  font-size: 12px;
  text-align: center;
  margin-top: 15px;
}